Transdigm Group (TDG)

Additional Interest) of $0.05 per week
per $1,000 principal amount of Notes will accrue on the Notes for the first 90-day
period immediately following the occurrence of a Registration Default
(increasing by an additional $0.05 per week per $1,000 principal amount of
Notes with respect to each subsequent 90-day period until all
Registration Defaults have been cured, up to a maximum additional interest rate
of 1.00% per annum). The Company shall pay interest and Additional Interest
semi-annually on January 15 and July 15 of each year, or if any such
day is not a Business Day, on the next succeeding Business Day (each an 